6422647 has 16 divisors (see below), whose sum is σ = 8064000. Its totient is φ = 4969440.

The previous prime is 6422641. The next prime is 6422657. The reversal of 6422647 is 7462246.

6422647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6422647 - 2³ = 6422639 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6422641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18229 + ... + 18577.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^6422647 is an apocalyptic number.

6422647 is a deficient number, since it is larger than the sum of its proper divisors (1641353).

6422647 is a wasteful number, since it uses less digits than its factorization.

6422647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its digits is 16128, while the sum is 31.

The square root of 6422647 is about 2534.2941818187. The cubic root of 6422647 is about 185.8822915017.

The spelling of 6422647 in words is "six million, four hundred twenty-two thousand, six hundred forty-seven".